Adds GITHUB_BASE_URL input

Author: daniel-anya

Diff for: action.yml

@@ -6,6 +6,13 @@ description: >
   Publish diff coverage report as PR comment, and create a coverage badge
   to display on the readme.
 inputs:
+  GITHUB_BASE_URL:
+    description: >
+      The base URL for the GitHub API, typically used to specify custom endpoints 
+      for GitHub Enterprise Server (e.g., `https://github.mycompany.com/api/v3`). 
+      Defaults to `https://api.github.com` for GitHub.com.
+    default: "https://api.github.com"
+    required: false
   GITHUB_TOKEN:
     description: >
       A GitHub token to write comments and write the badge & coverage data

Diff for: coverage_comment/main.py

@@ -34,7 +34,7 @@ def main():
         config = settings.Config.from_environ(environ=os.environ)
 
         github_session = httpx.Client(
-            base_url="https://api.github.com",
+            base_url=config.GITHUB_BASE_URL,
             follow_redirects=True,
             headers={"Authorization": f"token {config.GITHUB_TOKEN}"},
         )